Add Debug Overlay with runtime element inspection and extractor registry

[ABKQPO]

Summary

This PR adds a GUI Debug Overlay (Debug Mode) to GuideNH that helps developers and content creators inspect, pick, and export detailed information about guide pages and scene elements at runtime.

Key capabilities

• Toggleable GUI debug overlay (hotkey: Ctrl + Shift + Alt + C) with persistent config switches.

• Left-bottom information panel showing FPS, memory usage, mouse coordinates, hovered element details, and parent element information.

• Center-bottom debug control panel for toggling display options, printing the document tree, recompiling the current page, and exporting debug data.

• Precise runtime element picking through deep traversal, including support for:

  • DebugComponent for sub-components (tabs, scene buttons, chart parts).
  • DebugFlowContainer for inline flow elements (images, links, text, LaTeX).
  • InterpolatedViewport for animated scroll/zoom-aware hit testing.

• Registry-based DebugInfoExtractor system with built-in extractors for documents, paragraphs, headings, items, images, charts, Mermaid diagrams, scenes, code blocks, LaTeX, containers, and generic fallback handling.

• Animated debug visualization with configurable dashed outlines, cursor markers, colors, scale, line thickness, and animation parameters.

• PerformanceMonitor for FPS and memory sampling, and TreePrinter for structured document tree output.

• Integration with GuideScreen and SceneEditorScreen for overlay rendering and debug input handling.

• New localization entries (en_US, zh_CN) and wiki documentation for Debug Mode.

• Configurable debug options under ModConfig.Debug, with debug logic gated to minimize overhead when disabled.

Checklist

• I have tested this PR in DevEnv
• I have tested this PR in Fullpack
• This PR is in compliance with the GTNH AI Policy
• This PR requires another PR in order to merge